Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 26, Problem 2TY
Summary Introduction
Introduction: The relative age of fossils can be determined by their location in sedimentary rock. The age of a fossil can also be estimated by analyzing the decay of radioisotopes present within the accompanying rock. This is known as radiometric dating.
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Which of the following is NOT true for relative dating methods:
A. Relies on observational skills
B. Includes stratigraphy which is based on ordered layers that build up over time
C. Determines if one artifact or fossil is older than another
D. Gives you specific dates of the artifact or fossil
This video refers to Denisovans as a “Ghost Lineage.” In fact, Denisovans don’t even have a formal scientific name. What is the physical evidence that anthropologists need to further define and understand the Denisovans?
A.
None of the above
B.
A Type Specimen (and more Denisovan fossils)
C.
Neanderthal DNA
D.
H. sapiens DNA
Sieve tubes and sieve elements are
a. homoplastic because they have different function.
b. homologous because they have similar function.
c. homoplastic because their common ancestor was single-celled.
d. structures involved in transport within animals
Chapter 26 Solutions
Biology
Ch. 26.1 - Prob. 1CCCh. 26.1 - Prob. 2CCCh. 26.2 - Prob. 1CSCh. 26.2 - Prob. 1CCCh. 26.2 - Prob. 2CSCh. 26.3 - What are the defining features of primates?Ch. 26.3 - Core Skill: Modeling The goal of this modeling...Ch. 26 - Prob. 1TYCh. 26 - Prob. 2TYCh. 26 - Prob. 3TY
Ch. 26 - The endosymbiosis hypothesis explaining the...Ch. 26 - Prob. 5TYCh. 26 - Which of the following explanations of...Ch. 26 - Prob. 7TYCh. 26 - Prob. 8TYCh. 26 - Prob. 9TYCh. 26 - Which of the following statements regarding modern...Ch. 26 - Prob. 1CQCh. 26 - Prob. 2CQCh. 26 - Core Concept: Evolution Describe two examples in...Ch. 26 - Discuss the factors that have contributed to the...Ch. 26 - Discuss how the human body has changed since the...
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- Which of the following statements about the fossil record is true? a. The fossil record is a complete accounting of life on earth b. The fossil record is unbiased in the fossils that are found c. The fossil record is evenly sampled across all of life's history on earth d. There are certain biases in the fossil recordarrow_forwardScientists find an artifact next to an index fossil. What can they conclude about the unknown age of the artifact? a The artifact is older than the index fossil. b The artifact is younger than the index fossil. c The artifact is approximately the same age as the index fossil. d The artifact's age is not related to that of the index fossil.arrow_forwardFossils that serve as transitional links allow scientists toa. determine how prehistoric animals interacted with each other.b. deduce the order in which various groups of animals arose.c. relate climate change to evolutionary trends.d. determine why evolutionary changes occur.arrow_forward
- Given the sources of evidence, explain precisely how it supports evolution. B. Fossilarrow_forwardDerived characters are traits: A. that are more complicated than ancestral characters B. that characterize the last common ancestor of a particular collection of species. C. that have evolved after the last common ancestor of a particulan collection of species. D. that are less well suited to the environment than ancestral characters.arrow_forwardWhat factors are necessary for fossils to occur? I. Abundant MembersII. Exist for a long timeIII. Have many body parts A) I and II. B) I and III C) All of the above.arrow_forward
- please help: DNA of fossils and extinct organisms offers the prospect of studying past populations, their kinship relationships, and diets although DNA represents a complex mixture originating from many sources including introduced bacterial, fungal, and environmental DNA. a. Both False statements b. One statement is true while a second is false c. Not enough information to determine an answer d. Both True statementsarrow_forwardAn analysis of a phylogeny that displays data about the fossil record over time reveals all of the following EXCEPT A. Several extinction events occurred. B. Evolution results in a clear directional pattern. C. Evolution is the result of interactions between organisms and their environment. D. Evidence of continental drift exists.arrow_forwardA. Sex” refers to the observable physical characteristics that distinguish two kinds of humans, females and males. Select one: True False B. Palaeoanthropologists are biological anthropologists who study a. biological variation in living human populations. b. the fossils and remains of ancient human ancestors. c. human evolution using mitochondrial DNA. d. the material remnants of early human societies.arrow_forward
- Select the taxon that MOST CLOSELY applies to each of the statements below regarding anthropoids. Each term may be used once or not at all. Hominin genus with small head and oval birth canal. a. Homo sapiens + Species with a brain mass approximately three times larger than that of b. Homo heidelbergensis other extant hominins. c. Homo floresiensis * Species that comparative genomics suggests hybridized with Homo sapiens. d. Gigantopithecus e. Aegyptopithecus + Small-statured species found in Indonesia up to about 50,000 years ago. f. Homo neanderthalensis + Genus conjectured by some to have been responsible for the Yeti myth in southeast Asia. g. Homo h. Homo erectus i. Ardipithecus ramidus j. Proconsul k. Homo habilis 1. Australopithecus m. Australopithecus afarensisarrow_forwardWhich of the following is a prediction that evolution makes about the fossil record? Group of answer choices A. fossils of all time periods should be completely different from modern organisms B. most recent fossils should be most similar to modern life C. cats should appear in all fossil layers as rulers of the earth D. oldest fossils should be most similar to modern lifearrow_forwardMartian meteorites found in Antarctica were determined to possibly contain life. Scientists looked skeptically at these meteorites because a. their results suggest unusual chemical signatures that do not indicate life. b. features thought to be Martian fossils could be nonbiochemical formations. c. it is impossible for a piece of the Martian surface to fall to Earth. d. both a and b are true.arrow_forward
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